King Pin Adaptor, Hitch Assembly, and Towing System

ABSTRACT

A king pin adaptor is provided for allowing a king pin, intended to connect to a fifth wheel hitch, to be attachable to a ball hitch assembly. A hitch assembly is provided having a plurality of vertical and longitudinal positions for securing a ball member to allow for greater flexibility in attaching to various towed structures. The king pin adaptor and hitch assembly may be used alone or together as components of a towing system for towing a trailer with a king pin or ball mount.

CROSS-REFERENCE TO RELATED APPLICATIONS

Not Applicable.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable.

PARTIES TO A JOINT RESEARCH AGREEMENT

Not Applicable.

REFERENCE TO SEQUENCE LISTING

Not Applicable.

STATEMENT REGARDING PRIOR DISCLOSURES BY THE INVENTOR OR A JOINTINVENTOR

The inventor has made no prior disclosures regarding the presentinvention. The inventor has disclosed other inventions, notably asprovided in U.S. Pat. Nos. 6,264,228; 6,926,125; 8,439,388; and10,589,582 which include a Hitch Assembly For Activating a TowedVehicle's Brakes, Premature Activation Stop For Towed Vehicle CableBraking Systems, a Universally Pivotal Tow Bar Assembly, and a PivotalTow Bar Assembly. None of the referenced patents disclose the instantinvention.

BACKGROUND OF THE INVENTION

The present invention pertains to the field of towing systems forvehicles, specifically land vehicles towing trailers or similarstructures having a king pin.

The instant disclosure is directed to a king pin adaptor and a hitchassembly, alone and in combination to form a towing system, for use intowing a trailer or similar structure. The king pin adaptor is shaped toallow a trailer having a king pin to securely engage a ball of a balland hitch assembly. The hitch assembly of the present invention providessuch a ball, and further allows the ball to be positioned along multiplelongitudinal and vertical positions relative to the hitch assembly. Theking pin adaptor may be used separately or may be used together with thehitch assembly to provide a full towing system for towing a trailer,recreational vehicle (RV), or similar structure having a king pin behinda land vehicle, preferably a truck.

A typical fifth wheel hitch includes a channel for the king pin to slidehorizontally into and be secured within. The king pin is a, typically, 2or 3½ inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding froma bottom surface positioned near a front of a trailer. As a connectedtruck turns, the downward-facing surface of the semi-trailer (with thekingpin at the center) rotates against the upward-facing surface of thefixed fifth wheel hitch, which does not typically move relative to thetruck. To reduce friction, grease is applied to the surface of the fifthwheel. The fifth wheel hitch is secured to a truck and allows thetrailer to rotate radially via the king pin.

However, the kingpin and fifth wheel hitch is not inherentlyinterchangeable with a ball and hitch towing system. Further, thekingpin and fifth wheel hitch assembly combination does not permit awide range of movement between the truck and trailer up or down ineither vertical direction. The instant invention provides a king pinadaptor and a hitch that allows a ball and hitch system to be used witha trailer having a king pin.

BRIEF SUMMARY OF THE INVENTION

An object of the instant invention is to teach a king pin adaptorcomprising a housing having an opening along a face of the housing, theopening connecting the face to an inner chamber within the housing, anda cutout section having a perpendicularly oriented vertical face andhorizontal face, the vertical face having a groove; a plate having amatching groove along a vertical face, the plate securable along theperpendicularly oriented vertical face and horizontal face of thehousing such that the groove of the housing and the matching groove ofthe plate form a cylindrical chamber with at least two differentdiameters, wherein an opening is formed along an opposing face of thehousing between the housing and the plate when the plate is secured tothe housing; and a security pin positioned along the opening and movablebetween at least two positions in the opening by a handle.

A further object is to teach the king pin adaptor further comprising anopening through each opposing end of the plate; an opening through eachopposing end of the vertical face of the cutout section; and a fastener,wherein each opening of the plate matches a corresponding opening of thecutout section when the plate and housing are secured together, suchthat the fastener is insertable through each corresponding opening ofthe plate and housing to secure the plate and housing together.

Another object of the present invention is to teach a hitch assembly,comprising an elongated body having a plurality of cylindrical chambersspaced longitudinally along the body, each chamber open along a topsurface of the body, and a pair of corresponding pin holes laterallybisecting the body through each cylindrical chamber; at least one frontleg secured to a front end of the body; and at least one back legsecured to a back end of the body, wherein the at least one front legand at least one back leg are securable to a vehicle.

A further object is to teach the hitch assembly further comprising aball member having a cylindrical stabilizer portion and a sphericalconnector portion connected vertically by a grooved segment, wherein thecylindrical stabilizer portion has a plurality of vertically spacedhorizontal channels, each horizontal channel laterally bisecting thecylindrical stabilizer portion.

A further object is to teach the hitch assembly, wherein the ball memberis removably securable with each cylindrical chamber of the body alongthe cylindrical stabilizer portion.

A further object is to teach the hitch assembly, further comprising apin configured to be removably insertable through the pair ofcorresponding pin holes laterally bisecting the body and any of theplurality of vertically spaced horizontal channels, thereby removablysecuring the ball member along multiple vertical and horizontalpositions relative to the body.

Another object of the present invention is to teach a towing system,comprising a king pin adaptor, the king pin adaptor comprising:

-   -   a housing having an opening along a face of the housing, the        opening connecting the face to an inner chamber within the        housing, and a cutout section having a perpendicularly oriented        vertical face and horizontal face, the vertical face having a        groove; a plate having a matching groove along a vertical face,        the plate securable along the perpendicularly oriented vertical        face and horizontal face of the housing such that the groove of        the housing and the matching groove of the plate form a        cylindrical chamber with at least two different diameters,        wherein an opening is formed along an opposing face of the        housing between the housing and the plate when the plate is        secured to the housing; and a security pin positioned along the        opening and movable between at least two positions in the        opening by a handle;        a hitch assembly, the hitch assembly comprising:    -   an elongated body having a plurality of cylindrical chambers        spaced longitudinally along the body, each chamber open along a        top surface of the body, and a pair of corresponding pin holes        laterally bisecting the body through each cylindrical chamber; a        pair of front legs secured to a front end of the body; and a        pair of back legs secured to a back end of the body, wherein the        pair of front legs and pair of back legs are securable to a        vehicle; and

a ball member having a cylindrical stabilizer portion and a sphericalconnector portion connected vertically by a grooved segment, wherein thecylindrical stabilizer portion has a plurality of vertically spacedhorizontal channels, each horizontal channel laterally bisecting thecylindrical stabilizer portion.

A further object is to teach the towing system comprising a pinconfigured to be removably insertable through the pair of correspondingpin holes laterally bisecting the body and any of the plurality ofvertically spaced horizontal channels, thereby removably securing theball member along multiple vertical and horizontal positions relative tothe body.

The instant invention will be better understood with reference to thefollowing set of drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is front view of a king pin adaptor according to an embodiment ofthe invention;

FIG. 2 is a side view of the king pin adaptor of FIG. 1;

FIG. 3 is a side view of the king pin adaptor opposite from the sideview shown in FIG. 2;

FIG. 4 is a back view of the king pin adaptor of FIG. 1;

FIG. 5. is a bottom view of the king pin adaptor of FIG. 1;

FIG. 6 is a top view of the king pin adaptor of FIG. 1;

FIG. 7 is an exploded perspective view of the king pin adaptor of FIG.1;

FIG. 8A is a back view of an adaptor plate of the king pin adaptor ofFIG. 1;

FIG. 8B is a front view of the adaptor plate of FIG. 8A;

FIG. 8C is a bottom view of the adaptor plate of FIG. 8A;

FIG. 8D is a top view of the adaptor plate of FIG. 8A;

FIG. 8E is a side view of the adaptor plate of FIG. 8A;

FIG. 8F is an opposite side view of the adaptor plate of FIG. 8A;

FIG. 9A is a bottom view of the king pin adaptor with the securing pinand handle in an open position;

FIG. 9B is a bottom view of the king pin adaptor with the securing pinand handle in a closed position;

FIG. 10 is a perspective view of a hitch assembly according to anembodiment of the instant invention;

FIG. 11 is a side view of the hitch assembly of FIG. 10;

FIG. 12 is an opposite side view of the hitch assembly of FIG. 10;

FIG. 13 is a front view of the hitch assembly of FIG. 10;

FIG. 14 is a back view of the hitch assembly of FIG. 10;

FIG. 15 is a top view of the hitch assembly of FIG. 10;

FIG. 16 is a bottom view of the hitch assembly of FIG. 10;

FIG. 17 is a ball according to an embodiment of the instant invention;

FIG. 18 is an exploded view of the king pin adaptor, hitch assembly, andball according to a preferred embodiment of the instant invention;

FIG. 19A is a magnified view of a king pin on an exemplary trailer;

FIG. 19B is the king pin adaptor exploded around the king pin of theexemplary trailer of FIG. 19A;

FIG. 19C is the king pin adaptor secured around the king pin of theexemplary trailer of FIG. 19A;

FIG. 20 is a side view of a towing system secured to a bed of a truck;

FIG. 21 is a side view of the hitch assembly with the ball shown securedalong two different longitudinal vertical positions; and

FIG. 22 is a view of the towing system attached to a truck and trailer,including the king pin adaptor, hitch assembly, and ball.

The instant invention will be further understood with reference to thefollowing detailed description.

DETAILED DESCRIPTION OF THE INVENTION

A preferred embodiment of a king pin adaptor 100 is shown in multipleviews throughout FIGS. 1-9B. The preferred embodiment of the king pinadaptor 100 includes a housing 102, a plate 104, fasteners 108 and 109for securing the plate and housing together, a handle 106, and a spring113.

FIGS. 1-6 provide views of the king pin adaptor 100 along six differentsurfaces 160, 162, 164, 166, 168, and 169 of the housing 102. FIG. 1provides a view of the king pin adaptor 100 along a front surface 166.FIG. 2 shows a side of the king pin adaptor 100 including a side surface158 of the plate 104 and a side surface 168 of the housing 102. FIG. 3shows a side of the king pin adaptor opposite to the side shown in FIG.2. This side includes a side surface 159 of the plate 104 and a sidesurface 169 of the housing 102.

The housing 102 includes a cutout section 140 having a vertical surface144 and a horizontal surface 142. The cutout section 140 is best shownin FIG. 7. The vertical surface 144 and horizontal surface 142 areperpendicular to each other in the preferred embodiment. A length andwidth of each of the vertical surface 144 and horizontal surface 142match a length and width of corresponding vertical and horizontalsurfaces 150 and 152, respectively, of the plate 104. When the plate 104is secured to the housing 102 in the cutout section 140, each outersurface of the king pin adaptor 100 forms a quadrilateral.

The vertical surface 144 of the cutout section 140 includes asemi-circular recess or groove 118 and a second semi-circular recess orgroove 122. The recess 118 is positioned above, and adjacent to, thesecond recess 122. The recess 118 shares an edge with and is adjacent toan upper outer surface 162 of the housing 102, while recess 122 isadjacent to the horizontal surface 142. Recess 118 has a smallerdiameter than the second recess 122, measured from the respective edgesof the recesses 118, 122 along a plane defined by vertical surface 144.

An opening or through-hole 114 extends from the vertical surface 144through the housing 102 to an opposing outer surface 160, shown in FIG.4. The opening 114 is positioned on either side of the recesses 118, 122in the preferred embodiment. An interior surface of each opening 114 maybe threaded to receive a threaded fastener 108.

An opening 132 along a bottom outer surface 164 of the housing leadsinto an inner chamber 130, as shown in FIG. 5. The opening 132 and innerchamber 130 are positioned opposite the grooves 118 and 122. The opening132 is circular to accept at least a head portion of a ball member 300.A back surface 134 of the inner chamber 130 is preferably semi-circularto allow the ball member 300 to easily pivot within the inner chamber130 along the back surface relative to the housing when secured therein.The inner chamber 130 is preferably shaped to allow a maximum amount ofrotation between the king pin adaptor 100 and ball member 300, whileminimizing space between the back surface 134 and ball member to preventshaking or rattling within the inner chamber.

The handle 106 is operably attached to a pin 111 along the front surface166 of the housing 102. The pin 111 is inserted through a cylindricalopening extending through the housing 102 between opposing surfaces 160and 166. A spring 113 is secured coaxially around the pin 111 betweenthe handle 106 and housing 102. The spring 113 is further secured to thehandle 106, such that the spring compresses and expands in correspondingrotation of the handle about the pin 111. The handle 106 is positionedin a default position, or closed position, with the spring 113 expanded,as shown in FIG. 9A. When in the default position, the pin 111 secures aplate, fastener, or similar member 170 within opening 132 of innerchamber 130 to prevent removal of the ball member 300 from the innerchamber. In an open position, shown in FIG. 9B, the handle 106 isrotated such that spring 113 is compressed. Rotation of the handle 106causes corresponding rotation of the pin 111 and retraction of theplate, fastener, or similar member 170 from the opening 132 to allowinsertion or removal of the ball member 300 into or out of the innerchamber 130. Thus, the pin 111 is operably connected to the plate,fastener, or similar member 170. The spring 113 is attached to thehandle 106 in such a way that the handle will automatically rotate backto the default position without an external application of force to keepthe handle in the open position, as the compressed spring in the openposition with expand back to the default position, causing the handle torotate.

The plate 104 is shown along six different surfaces in FIGS. 8A-8F. Avertical surface 150 matching the vertical surface 144 is shown in FIG.8A. The plate 104 includes a semi-circular recess or groove 120 and asecond semi-circular recess or groove 124, which match groove 118 andgroove 122, respectively, such that grooves 118 and 120 form acylindrical space and grooves 122 and 124 form a larger cylindricalspace when the plate 104 is secured to the housing 102 within the cutoutsection 140. These cylindrical spaces correspond to a free end of a kingpin. Likewise, an opening or through-hole 112 extends from the verticalsurface 150 through the plate 104 to an opposing outer surface 154 oneither side of the grooves 120 and 124. FIG. 8B shows the opposing, orback, surface 154. FIGS. 8C and 8D show views of the plate 104 along atop surface 156 and a bottom surface 152, respectively. When the plate104 is secured to the housing 102, surface 156 of the plate and surface162 if the housing 102 form an upper surface of the king pin adaptor100, which will be positioned adjacent to a structure securing a kingpin, such as a trailer.

Each through-hole 112 of the plate 102 matches a correspondingthrough-hole 114 of the housing 102, and may likewise be threaded toaccept a threaded fastener.

FIGS. 8E and 8F show plate 104 side surfaces 158 and 159, respectively.

FIG. 7 shows an exploded view of the king pin adaptor 100, including thehousing 102, the plate 104, and fasteners 108, 109. As shown, the plate104 fits within the cutout section 140 of the housing 102. The verticalsurface 150 of the plate 104 matches and is secured against the verticalsurface 144 of the housing 102. The vertical surfaces are securedtogether by a fastener, in this case a bolt 108, inserted through eachcorresponding pair of through-holes 112 and 114 of the plate 102 andhousing 104, respectively. A nut 109 secures and prevents each bolt 109from being removed from corresponding through-holes 112 and 114. Thehorizontal surface 152 of the plate is positioned adjacent to horizontalsurface 142 of the housing 102.

Upon being secured together, the plate 104 and housing 102 form acircular opening 138 between surfaces 156 and 162, as seen in FIG. 6. Anupper chamber 136 is also formed, in which a king pin is securable. Aportion of the horizontal surface 142 of the housing forms a bottomsurface 137 of the upper chamber 136, defined within a circumference ofgrooves 122 and 124.

Preferably, opening 138, the cylindrical spaces formed by grooves 118,120 and 122, 124, and opening 132 are coaxial. Further, it is preferablethat the ball member 300 and the king pin are initially coaxial whensecured, assuming that both the vehicle and towed structure are both ona 180° flat surface. Further, it is preferable for a centrallongitudinal axis passing through the king pin to pass through a centerof the spherical head of the ball member, even as the king pin adaptor100 rotates about the ball member. It is also preferable to minimize thedistance within the king pin adaptor between the spherical head of theball member and the king pin. This positioning promotes maximum freedomof movement about a pivot point between the king pin adaptor 100 andball member 300.

While the preferred embodiment of the plate 102 and housing 104 shows agenerally quadrilateral king pin adaptor, it should be understood thatthe overall shape of the king pin adaptor 100 need not be aquadrilateral.

A preferred embodiment of a hitch assembly 200 is shown from multipleangles in FIGS. 10-16. The hitch assembly 200 includes an elongated body202 having a plurality of cylindrical chambers 218 spaced longitudinallyalong the body. Each chamber 218 is open along a top surface 203 of thebody 202 and extends downwardly within the body. Each chamber 218 alsohas a pair of corresponding pin holes 220 laterally bisecting the body202 through each chamber. Each pin hole 220 is sized to allow a pin, orsimilar fastener, to insert through the body 202 and a correspondingchamber 218. At least one front leg 204 is secured to a front end 205 ofthe body 202 and extends downwardly to an elongated plate 212 positionedperpendicularly to the body. At least one back leg 206 is secured to aback end 207 of the body 202 and extends downwardly to another elongatedplate 210 positioned perpendicularly to the body. A pair of bracemembers 208 are preferably positioned between the body 202 and plate210, one brace on either side of the body, such that a triangularstructure is formed between each brace member, the back leg 206, andplate. Each plate 210 and 212 is securable to a vehicle or towingstructure by a one or more connection members 214 or 216, respectively,extending downwardly from each respective plate.

In the preferred embodiment, the body 202 includes five cylindricalchambers 218 evenly spaced along the length of the body, each of thefive chambers having a pair of corresponding pin holes 220 positionedsuch that a pin 402 may be inserted through a midpoint of a diameter ofthe ball member 300 to secure the ball member within a cylindricalchamber at to the hitch assembly 200. A diameter of each cylindricalchamber 218 preferably matches or slightly exceeds a diameter of theball member 300 such that the ball member securely fits within thecylindrical chamber with minimal later movement.

In the preferred embodiment of the hitch assembly 200, the front leg 204is angled relative to the plate 212 and body 202, while the back leg 206is perpendicular relative to the plate 210 and body. In otherembodiments of the hitch assembly, the front leg may similarly beperpendicular to the plate 212 and body 202 and/or the back leg may beangled relative to the plate 210 and body.

Brace members, similar to brace members 208, may be included along afront end 205 of the body 202 between the body and plate 212. Such bracemembers are structurally more useful when the front leg 204 isperpendicularly attached to plate 212 and body 202.

Plates 210 and 212 are trapezoidal in shape with rounded edges. Theplates 210, 212 may each be different shapes besides trapezoidal, andboth plates 210, 212 need not be the same shape. For manufacturingpurposes, it is more efficient to have the plates 210, 212 be similarlyshaped. The plates 210, 212 provide connection points between the hitchassembly 200 and, typically, an automotive vehicle. In the preferredembodiment, such connection points are connection members 214 or 216extending vertically downward from plates 210 and 212, respectively,each member 214, 216 having a horizontally positioned opening 230 for afastener to pass through.

As seen in FIG. 16, there are no openings along a bottom surface 209 ofthe body 202. The cylindrical chambers 218 to not extend through thebody 202, but only partially extend downwardly into the body. Byproviding a bottom surface in each cylindrical chamber 218, the ballmember 300 may be supported in case the pin 402 becomes dislodged orremoved from the pin holes 220 and ball member.

A preferred embodiment of the ball member 300 is shown in FIG. 17. Theball member 300 includes a spherical head 302 vertically attached to andsupported by a neck 304, which in turn is vertically attached to acylindrical body 306. The head 302 is spherical to provide a rotationalsurface for the king pin adaptor 100 or another structure capable ofattaching to a ball hitch.

The neck 304 has a small diameter than either the head 302 or body 306to allow the head to be secured within the chamber 130 by the plate,fastener, or similar member 170. In the default, closed position theplate, fastener, or similar member 170 reduces the effective diameter ofthe opening 132, preventing the head 302 from being removed from theinner chamber 130. The plate, fastener, or similar member 170 restsagainst or adjacent to the neck 304 in the default, closed position ofthe king pin adaptor 100.

The body 306 includes multiple openings 308 for the pin 402 to beinserted through to bisect the ball member 300. The openings 308 arepositioned vertically relative to each other along a height of the body308. This allows the ball member 300 to be positioned at differentheights relative to the hitch assembly 200. Along with the multiplecylindrical chambers 218, the openings 308 along the body 306 providemultiple vertical and horizontal positions for the ball member 300relative to the hitch assembly 200.

FIG. 18 shows an exploded view of a towing system 400, which includesthe king pin adaptor 100, the ball member 300, the hitch assembly 200,the pin 402, and clip 404. The king pin adaptor 100 is attachable to aking pin at one end and the ball member 300 at an opposite end. The ballmember 300 is insertable into the hitch assembly 200 and securabletherein by the pin 402. The clip 404 attaches to the pin 402 to preventthe pin from being removable from the pin holes 220 and opening 308 ofthe hitch assembly 200 and ball member 300, respectively. Theembodiments of the king pin adaptor 100, hitch assembly 200, and ballmember 300 shown in the towing system include the preferred embodimentsof each referenced structure as previously discussed. Furtherembodiments of each referenced structure are also contemplated as beingusable within the towing system 400.

FIGS. 19A-19C show an exemplary trailer 500 having a king pin 502, andthe king pin adaptor 100 being attached thereto. The trailer 500 mayinclude other typical structures that are towed behind an automotivevehicle. The trailer 500 shown in FIG. 19A is not shown to limit theinstant invention and only serves as an example of a trailer thatincludes a king pin 502. The king pin 500 typically includes a headportion 504, a neck portion 506, and a body portion 508. All threeportions 504, 506, and 508 are typically cylindrical or have circularcross-sections. The neck portion 506 may be a groove or indentationbetween the head portion 504 and the body portion 508. The neck portion506 has a smaller diameter than either the head portion 504 or the bodyportion 508. The head portion 504 and body portion 508 may have the samediameter or may have different diameters.

The head portion 504 of a king pin 500 is typically flat along an endsurface 510, or slightly curved if not completely flat. Unlike a ballmember 300 attachment, a king pin 502 restricts rotation to a singleplane, as rotation is meant to occur about the neck portion 506. Thehead portion 504 restricts three-dimensional rotation. Conversely, thespherical head 302 of the ball member 300 allows three-dimensionalrotations. This is one of the desirable features that motivatesattaching a king pin adaptor 100 to a king pin 502 in the instantinvention.

In FIG. 19B, the plate 104 and housing 102 of the king pin adaptor 100are shown separated and positioned around the king pin 502 of thetrailer 500. When attached, as shown in FIG. 19C, the head portion 504is secured between grooves 122 and 124 and the neck portion is securedbetween grooves 118 and 120, both the neck portion and the head portionbeing secured within chamber 136. Grooves 118 and 120 of the housing 102and plate 104, respectively, along with horizontal surface 142 securethe king pin adaptor 100 to the king pin 502 to prevent lateral orlongitudinal movement of the adaptor relative to the king pin. Onlyrotational movement of the king pin adaptor 100 about the king pin 502is possible.

FIG. 20 shows an exemplary automotive vehicle 600, i.e. a pickup truck,with a cross-sectional view of a bed of the truck to which the hitchassembly 200 of the towing system 400 of the instant invention isattached. Attachment of the towing system 400 to a vehicle, and moreparticularly the hitch assembly 200, is performed in a manner known inthe field for attaching hitches to truck or similar automotive vehicletypically used to tow trailers.

FIG. 21 provides an exemplary illustration of the ball member 300positioned at different vertical and horizontal positions relative tothe hitch assembly. Ball member 300A is positioned in a cylindricalchamber 218 closest to a back end 207 of the body 202 and the pin 402would be inserted through a bottom opening 308 of the ball member 300A.Ball member 300B is positioned in the cylindrical chamber 218second-closest to the front end 205 of the body 202. The pin 402 wouldbe inserted through a middle opening 308 of the ball member 300B. Foreither ball member 300A or 300B, the pin would be inserted through thepair of pin holes 220 of the body 202 and through the correspondingopening 308, and the clip 404 would be inserted through a hole in a freeend of the pin to prevent the pin 402 from being removed in a directionopposite to a direction of insertion.

FIG. 22 illustrates the vehicle 600 connected to the trailer 500 via thetowing system 400.

1. A king pin adaptor, comprising: a housing having an opening along aface of the housing, the opening connecting the face to an inner chamberwithin the housing, and a cutout section having a perpendicularlyoriented vertical face and horizontal face, the vertical face having agroove; a plate having a matching groove along a vertical face, theplate securable along the perpendicularly oriented vertical face andhorizontal face of the housing such that the groove of the housing andthe matching groove of the plate form a cylindrical chamber with atleast two different diameters, wherein an opening is formed along anopposing face of the housing between the housing and the plate when theplate is secured to the housing; and a security pin positioned along theopening and movable between at least two positions in the opening by ahandle.
 2. The king pin adaptor of claim 1, further comprising anopening through each opposing end of the plate; an opening through eachopposing end of the vertical face of the cutout section; and a fastener,wherein each opening of the plate matches a corresponding opening of thecutout section when the plate and housing are secured together, suchthat the fastener is insertable through each corresponding opening ofthe plate and housing to secure the plate and housing together.
 3. Theking pin adaptor of claim 1, wherein the security pin is spring-loadedto move between the at least two positions.
 4. The king pin adaptor ofclaim 1, wherein an end of a king pin is securable with the cylindricalchamber formable by the plate and the housing.
 5. A hitch assembly,comprising: an elongated body having a plurality of cylindrical chambersspaced longitudinally along the body, each chamber open along a topsurface of the body, and a pair of corresponding pin holes laterallybisecting the body through each cylindrical chamber; at least one frontleg secured to a front end of the body; and at least one back legsecured to a back end of the body, wherein the at least one front legand at least one back leg are securable to a vehicle.
 6. The hitchassembly of claim 5, wherein a stabilizer plate connects the at leastone front leg to the vehicle.
 7. The hitch assembly of claim 6, whereinthe stabilizer plate and the at least one front leg are securable to thevehicle.
 8. The hitch assembly of claim 5, wherein a stabilizer plateconnects the at least one back leg to the vehicle.
 9. The hitch assemblyof claim 8, wherein the stabilizer plate and the at least one back legare securable to the vehicle.
 10. The hitch assembly of claim 5, whereinthe plurality of cylindrical chambers includes five cylindricalchambers.
 11. The hitch assembly of claim 5, further comprising a ballmember having a cylindrical stabilizer portion and a spherical connectorportion connected vertically by a grooved segment, wherein thecylindrical stabilizer portion has a plurality of vertically spacedhorizontal channels, each horizontal channel laterally bisecting thecylindrical stabilizer portion.
 12. The hitch assembly of claim 11,wherein the ball member is removably securable with each cylindricalchamber of the body along the cylindrical stabilizer portion.
 13. Thehitch assembly of claim 12, further comprising a pin configured to beremovably insertable through the pair of corresponding pin holeslaterally bisecting the body and any of the plurality of verticallyspaced horizontal channels, thereby removably securing the ball memberalong multiple vertical and horizontal positions relative to the body.14. A towing system, comprising: a king pin adaptor, comprising: ahousing having an opening along a face of the housing, the openingconnecting the face to an inner chamber within the housing, and a cutoutsection having a perpendicularly oriented vertical face and horizontalface, the vertical face having a groove; a plate having a matchinggroove along a vertical face, the plate securable along theperpendicularly oriented vertical face and horizontal face of thehousing such that the groove of the housing and the matching groove ofthe plate form a cylindrical chamber with at least two differentdiameters, wherein an opening is formed along an opposing face of thehousing between the housing and the plate when the plate is secured tothe housing; and a security pin positioned along the opening and movablebetween at least two positions in the opening by a handle; a hitchassembly, comprising: an elongated body having a plurality ofcylindrical chambers spaced longitudinally along the body, each chamberopen along a top surface of the body, and a pair of corresponding pinholes laterally bisecting the body through each cylindrical chamber; apair of front legs secured to a front end of the body; and a pair ofback legs secured to a back end of the body, wherein the pair of frontlegs and pair of back legs are securable to a vehicle; and a ball memberhaving a cylindrical stabilizer portion and a spherical connectorportion connected vertically by a grooved segment, wherein thecylindrical stabilizer portion has a plurality of vertically spacedhorizontal channels, each horizontal channel laterally bisecting thecylindrical stabilizer portion.
 15. The towing system of claim 14,wherein the ball member is removably securable with each cylindricalchamber of the body along the cylindrical stabilizer portion.
 16. Thetowing system of claim 15, further comprising a pin configured to beremovably insertable through the pair of corresponding pin holeslaterally bisecting the body and any of the plurality of verticallyspaced horizontal channels, thereby removably securing the ball memberalong multiple vertical and horizontal positions relative to the body.